Explains the necessity for a domain concept in understanding ferromagnetism and discusses various factors influencing the domain configuration in a crystal. (MLH)

Discusses an instructional program for physics students in the use of libraries and information sources that includes a literature researching project. (MLH)

Using the simple optical system and photodiode described in this article it is possible to give clear, quantitative demonstrations of all the Fraunhofer diffraction phenomena at single and multiple apertures. These measurements can be related to the theoretical predictions given in standard textbooks. Circuit diagram and optical layout are…

The syndicate study is a group approach to solving problems. Students are involved in fieldwork, research, discussion, and reporting on a particular problem dealing with the interaction of scientific technology and society. Some syndicate topics include physical control of the environment, low impact technology, and social implications of nuclear…

An elementary analysis of a common textbook airplane problem is given, and then, as an illustrative example, the possibilities of this mechanism for animal navigation are briefly considered. (Author/MA)

Presented is the design of an electrical analogue of the simple pendulum--a one-dimensional oscillator resonating within a frequency range which can be generated and observed with readily available instruments. One possible study sequence is outlined. (Author/MA)

Discussed are how the thermal vibrations of a solid are described in terms of lattice waves, how these waves interact with other waves, or with themselves, and how one is led from such a description in terms of waves to the concept of a phonon. (Author/MA)

Traditional undergraduate courses in gas kinetic theory encourage the view that in all collisions between a gas atom and a surface, the angle of incidence of the gas atom equals its angle of reflection. This article illustrates and explains the incorrectness in assuming specular reflection and zero dwell time. (Author/MA)

Formulae are proposed for the distinct cases of monatomic and diatomic gas volumes. Eight figures illustrate the article. (Author/MA)

Illustrated and described is the design of an apparatus that can be used by students in a short period of time. It gives quantitative results showing evidence of thermoelastic properties of fluids near the critical point. (Author/MA)

Presented is an exercise in the ability to navigate by the stars. It applies difficult concepts of positional astronomy concerning coordinate systems and time. Stereographic projection is utilized because it allows rapid completion of calculations and measurements and keeps the concepts clear to the students. (MA)

Provided is information on the development, operation, and evaluation of an item bank for multiple choice questions in physics. While the users of the bank are presently limited, the item banks has saved its members time and provided items and ideas for items. (MA)

Presents a brief view of the field of medical physics and brief summary of other articles appearing in this journal issue pertaining to medical physics. (SL)

Reviews the role of the radiotherapy branch of medical physics. (SL)

Reviews the diagnostic and therapeutic uses of radioactive materials in nuclear medicine. (SL)